import math
RADIUS = 3956.6

def distance(lat1, long1, lat2, long2):
    lat1 = math.radians(lat1)
    long1 = math.radians(long1)
    lat2 = math.radians(lat2)
    long2 = math.radians(long2)
    the_cos = math.sin(lat1) * math.sin(lat2) + math.cos(lat1) * math.cos(lat2) * math.cos(long1 - long2)
    arc_length = math.acos(the_cos)
    return arc_length * RADIUS

def find(target, file):


def main():
    zip = input("What Zip code are you interested in? ")
    target = float(input("And what proximity (in miles)? "))
    with open("zipcodes.txt") as file: